Our group chat was full of plans that never happened. Lots of "we should do xyz sometime" with no follow-through. But whenever someone just showed up somewhere and posted it, people actually joined.

This made me realize that the barrier wasn't interest, it was friction. Nobody wants to be the one to organize, confirm attendance and chase people down all alone. So I built something that addresses this.

Fomo is an activity planning mobile app with a web version. The core idea is:

• Create a circle of specific friends.
• Post what you're doing today or later with a specified date, time and location, and invite a circle.
• Your circle sees it, they join if they're in. No group chat chaos.

What I built it with:

• React + Capacitor (iOS + Android + web from one codebase)
• Firebase auth with email, Google, and Apple Sign-In
• Real-time activity feed with event emitters
• Push notifications via FCM
• In-app messaging per activity

Hardest parts:

• Getting native auth (especially Apple Sign-In) and push notifications to behave consistently across iOS, android and web was genuinely painful
• Capacitor's bridge for Firebase is well-documented but has some sharp edges with token refresh

It's live on the App Store and Google Play and still early with a small user base. We also have a few exciting features we plan on adding to fomo in future.

Happy to go deeper on any of the technical decisions if useful.